Keystones — Lintel
Five GCSE retrieval questions · 20 March 2018 · mathsvault.uk/keystones
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1. Number Converting to standard form
6400000
Answer: 6.4 × 106 -
2. Algebra Factorising monic quadratics
Factorise: x² + 2x - 35
Answer: (x + 7)(x - 5) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 23cm, angle = 50°. Find adjacent side
Answer: 14.8cm -
4. Ratio Mixed ratio problems
Divide 154 in the ratio 1:2:4
Answer: 22, 44 and 88 -
5. Statistics Mean
Calculate the mean of: 7, 20, 40, 13, 41, 28
Answer: 24.8